Abstract

An intracavity frequency-doubling scheme was merged with an actively mode-locked AlGaInP laser diode with an external cavity to provide efficient generation of 335-nm ultraviolet light. Intense pulses of <16 ps were successfully generated inside the cavity at subgigahertz repetition frequencies. We applied those pulses to intracavity second-harmonic generation from a 5-mm-long LiIO3 crystal, which resulted in average ultraviolet power of 70 µW for an average fundamental power of 73 mW.

© 1999 Optical Society of America

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